/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package com.guorui.web;

import com.guorui.ejb.Book;
import com.guorui.ejb.BookFacade;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Iterator;
import javax.ejb.EJB;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 *
 * @author lenovo
 */
@WebServlet(name = "ListBooks", urlPatterns = {"/ListBooks"})
public class ListBooks extends HttpServlet {

    @EJB
    private BookFacade bookFacade;

    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
     * methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        try (PrintWriter out = response.getWriter()) {
            /* TODO output your page here. You may use following sample code. */
            out.println("<!DOCTYPE html>");
            out.println("<html>");
            out.println("<head>");
            out.println("<title>Servlet ListBooks</title>");            
            out.println("</head>");
            out.println("<body>");
            out.println("<h1>图书信息如下</h1>");
            out.println("<table border='10'>");
            out.println("<tr>");
            out.println("<th>ISBN</th>");
            out.println("<th>作者</th>");
            out.println("<th>书名</th>");
            out.println("<th>出版社</th>");
            out.println("<th>价格</th>");
            out.println("</tr>");
            Iterator ptr = this.bookFacade.findAll().iterator();
            while(ptr.hasNext()){
                out.println("<tr>");
                Book bk = (Book)ptr.next();
                out.println("<br>" + bk.getIsbn() + "</br>");
                out.println("<br>" + bk.getAuthor() + "</br>");
                out.println("<br>" + bk.getTitle() + "</br>");
                out.println("<br>" + bk.getPublisher() + "</br>");
                out.println("<br>" + bk.getPrice() + "</br>");
                out.println("</tr>");
            }
            out.println("</table>");
            out.println("</body>");
            out.println("</html>");
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}
